铸造2012，Vol.61Issue(12)：1383-1387,5.
Ca对铸态Mg-6Al及Mg-6Al-2Si系合金组织与性能的影响
Effects of Ca Addition on Microstructure and Mechanical Properties of As-Cast Mg-6Al and Mg-6Al-2Si Based Alloys
任英磊 1耿宁宁 1热焱 1尤俊华 1邱克强1
作者信息
- 1. 沈阳工业大学材料科学与工程学院,辽宁沈阳110870
- 折叠
摘要
Abstract
To clarify the effects of alloying element Ca on properties of Mg-6Al-0.3Mn-0.5Zn-1.5Sn-0.3Sr-xCa (x =0,0.5%) and Mg-6Al-2Si-0.3Mn-0.5Zn-1.5Sn-0.3Sr-%Ca(x=0, 0.5%) alloys at different working temperature, the phase constituent, microstructure, fracture morphologies and tensile properties at room temperature and 150 °C were investigated by X-ray diffraction, optical microscopy, scanning electron microscopy and mechanical test machine.The results show that Ca addition can cause the formation of CaMgSn, CaMg (Sn, Si) and other second phases, lead to the obvious solid solution strengthening, increase the tensile strength at room and high temperature.Si addition can improve the tensile strength at high temperature but decrease that at room temperature.Therefore, Mg-6Al-0.3Mn-0.5Zn-l.5Sn-0.3Sr-0.5Ca is suitable for room temperature parts, while Mg-6Al-2Si-0.3Mn-0.5Zn-1.5 Sn-0.3 Sr-0.5Ca is suitable for higher temperature parts.关键词
镁合金/Ca元素/显微组织/力学性能Key words
magnesium alloy/ Ca element/ microstructure/ mechanical properties分类
矿业与冶金引用本文复制引用
任英磊,耿宁宁,热焱,尤俊华,邱克强..Ca对铸态Mg-6Al及Mg-6Al-2Si系合金组织与性能的影响[J].铸造,2012,61(12):1383-1387,5.
